Bromus squarrosus (corn brome)

Polygala senega (Seneca snakeroot)
Polygala verticillata (whorled milkwort)
Polygala vulgaris
Polygonatum multiflorum
Polygonatum odoratum
Polygonella articulata (coastal jointweed)
Polygonum amphibium var. emersum (longroot smartweed)
Polygonum arifolium (halberdleaf tearthumb)
Polygonum aviculare
Polygonum aviculare (prostrate knotweed)
Polygonum bellardii (narrowleaf knotweed)
Polygonum buxiforme (box knotweed)
Polygonum careyi (Carey's smartweed)
Polygonum cilinode (fringed black bindweed)
Polygonum convolvulus var. convolvulus (black bindweed)
Polygonum douglasii (Douglas' knotweed)
Polygonum fowleri (Fowler's knotweed)
Polygonum glabrum (denseflower knotweed)
Polygonum glaucum (seaside knotweed)
Polygonum hydropiperoides (swamp smartweed)
Polygonum leptocarpum (narrowpoint knotweed)
Polygonum pensylvanicum (Pennsylvania smartweed)
Polygonum punctatum var. punctatum (dotted smartweed)
Polygonum ramosissimum (bushy knotweed)
Polygonum ramosissimum var. prolificum (bushy knotweed)
Polygonum ramosissimum var. ramosissimum (bushy knotweed)
Polygonum sagittatum (arrowleaf tearthumb)
Polygonum scandens var. cristatum (climbing false buckwheat)
Polygonum scandens var. dumetorum (climbing false buckwheat)

Image of Bromus squarrosus (corn brome) 1
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 279.